In this study, the potential of four different culture selection methods under short-term enrichment time (STE) to accumulate PHA-producing bacteria in mixed activated sludge was compared and the most efficient culture selection method was introduced. This means, PHA-producing microbial community was firstly enriched in a sequencing batch bioreactor (SBR) with four different selection methods i...

One dimensional heat transport model is formulated to solve melting rate of batch as well unsteady temperature distribution in thickness direction batch. Heat exchange with decomposed gas, volumetric change during and tide foam are considered. Numerical simulation performed demonstrate the both heating period. The also presents steady for response foam. calculated result provides time-temperatu...

We consider the problem of minimizing the total late work ( n ∑ j=1 V j) on an unbounded batch processing machine, where V j = min{Tj, p j} and Tj = max{C j−d j,0}. The batch processing machine can process up to B (B≥ n) jobs simultaneously. The jobs that are processed together form a batch, and all jobs in a batch start and complete at the same time, respectively. For a batch of jobs, the proc...

In batch processes, end-product qualities are cumulatively determined by variable dynamic trajectories throughout each batch. Meanwhile, batch processes are inherently time-varying, implying that process variables may have different impacts on end-qualities at different time intervals. To take both the cumulative and the time-varying effects into better consideration for quality prediction, a b...